To make a delicious red velvet cake, begin by preheating your oven to 350°F (175°C). Grease and flour the pans.
Gather your ingredients. In a large mixing bowl, whisk together the flour, sugar, baking soda, salt, and cocoa powder. In another bowl, mix the oil, buttermilk, eggs, food coloring, and vanilla until well combined.
Gradually incorporate the wet ingredients into the dry ingredients, stirring just until combined. Be careful not to overmix. Divide the batter evenly between two greased and floured 9-inch round cake pans.
Bake for 25 to 30 minutes, or until a toothpick inserted into the center comes out clean. Once baked, allow the cakes to cool in the pans for 10 minutes before transferring them to a wire rack to cool completely.